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post #1 of 7 Old 07-06-2004, 10:23 PM
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miss at slower speeds

I have a 2002 with 10,000 mi. It misses and sometimes dies at slower speeds, it's more like a cuagh thru the intake or air filter. Anyone have this problem and how do I solve it. I'm using higher octane fuel.
Thanks for any help
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post #2 of 7 Old 07-07-2004, 12:00 AM
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There are some here, including me, that believe that you should use regular (87 oct) gas. Suzuki recommends 87 oct. The high oct gas burns slower and can backfire through the TB and stall the engine. There have been many post on this subject.

post #3 of 7 Old 07-07-2004, 12:02 AM
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Mine did that frequently with the higher octane fuel, especially in warmer weather. It almost never does that on 87 octane regular fuel. Also check that your idle speed is high enough. Should be 1100 - 1200 rpm when warmed up. If it is 1000 rpm, you'll get that "fart stall" thing occasionally when coming to a stop, even with 87 octane gas.
post #4 of 7 Old 07-07-2004, 10:49 AM
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Higher octane gas burns slower so you might get a small amount of unburned gas out the exhaust and less efficiency. Lower octane gas burns faster providing a chance for a backfire up the intake. And it all depends on what the timing is set up for. If the timing is too far advanced it can backfire up the intake regardless of what gas you use.

Any backfire up the intake on this bike would indicate to me that the timing is fast for the gas you are using so go to a slower burning gas. The computer is only a 16 bit on this bike and is not fast like the 32 bit ones on the gsxr's and may not be able to compensate fast enough in conjunction with the knock sensor. I run 89 and have never had a backfire up the intake.

Of course opinions vary here so you have to read and make up your own mind.
post #5 of 7 Old 07-07-2004, 10:52 AM
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It sounds more like a fuel injection problem than a timing problem to me. Take it to the dealer and get your throttle bodies sync'd and your fuel injection system checked over.
post #6 of 7 Old 07-10-2004, 01:06 PM
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One thing you may not be aware of is MTBE. It is an oxygen bearing compound that is formulated in many super unleaded gasolines. This compound WILL cause a lean surge or "miss", but dont forget the DL1000 needs a very exact Thottle synch, and the unit will run best with the rear cylinder leading the front very slightly. Also ask for your tech to use a mercury stick it is a little more precise. Also the TPS should NOT be adjusted using the mode selector switch, but using the new special tool which allows the tech to connect to the TPS while the unit is running and measure using an electrical meter. It should be set to 1.125-1.350 DCV. Hot and while running.

post #7 of 7 Old 03-29-2005, 10:43 PM
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Location: spooner, wi
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see your dealer

Have your dealer hook the computer up to the bike and adjust to run richer. They come from the factory set far too lean. Mine runs great even on high octane now.

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